You can use 4 AA batteries or DC 6V power adapters (both are not included). The faster the working frequency is, the denser the sewing thread is. Because this is a monofilament sewing machine, you need to thread it yourself, otherwise the rope will fall off. The sewing machine is equipped with an English manual, 8 bobbins, 1 pair of scissors, 10 safety pins, 1 threading device, 1 sewing needle, 1 extension shaft and 1 tape measure. There is a test cloth on it to test whether it works. It is suitable for beginners, family and travel emergency use, and can also be put in the car for standby. It can be used for repairing patches, sewing clothes, baby bibs, pet clothing, jeans, curtains, bed sheets, pillows, tablecloths, shopping bags, etc. It is applicable to all fabrics with thickness less than 1.8mm. You can sew without taking off your clothes. The product is upgraded with technology to increase power and reduce noise. It is light weight, and does not occupy storage space. It is more efficient than the desktop sewing machine and saves money and time. It is also equipped with sewing accessories and supplies, which can meet your sewing needs. The hand-sewing machine is upgraded with technology, which increases power, reduces noise and is not easy to skip stitches. One-hand operation 21 x 7 x 5 cm. Beginners can meet their different sewing needs. The manual sewing machine is equipped with 4 thread set points, which can be removed by sewing through the knob and adjustable mounting plate. Plug Type: US Plug, it applies to Canada, Mexico, Thailand, Taiwan, the Philippines and so on. Voltage: AC110V Colour: black Material: plastic Package Contents: 1 Set x sewing machine